--- a/netserver/Codec/Binary/UTF8/String.hs	Sun Apr 12 12:50:43 2009 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,97 +0,0 @@
---
--- |
--- Module      :  Codec.Binary.UTF8.String
--- Copyright   :  (c) Eric Mertens 2007
--- License     :  BSD3-style (see LICENSE)
--- 
--- Maintainer:    emertens@galois.com
--- Stability   :  experimental
--- Portability :  portable
---
--- Support for encoding UTF8 Strings to and from @[Word8]@
---
-
-module Codec.Binary.UTF8.String (
-      encode
-    , decode
-    , encodeString
-    , decodeString
-  ) where
-
-import Data.Word        (Word8)
-import Data.Bits        ((.|.),(.&.),shiftL,shiftR)
-import Data.Char        (chr,ord)
-
-default(Int)
-
--- | Encode a string using 'encode' and store the result in a 'String'.
-encodeString :: String -> String
-encodeString xs = map (toEnum . fromEnum) (encode xs)
-
--- | Decode a string using 'decode' using a 'String' as input.
--- | This is not safe but it is necessary if UTF-8 encoded text
--- | has been loaded into a 'String' prior to being decoded.
-decodeString :: String -> String
-decodeString xs = decode (map (toEnum . fromEnum) xs)
-
-replacement_character :: Char
-replacement_character = '\xfffd'
-
--- | Encode a Haskell String to a list of Word8 values, in UTF8 format.
-encode :: String -> [Word8]
-encode = concatMap (map fromIntegral . go . ord)
- where
-  go oc
-   | oc <= 0x7f       = [oc]
-
-   | oc <= 0x7ff      = [ 0xc0 + (oc `shiftR` 6)
-                        , 0x80 + oc .&. 0x3f
-                        ]
-
-   | oc <= 0xffff     = [ 0xe0 + (oc `shiftR` 12)
-                        , 0x80 + ((oc `shiftR` 6) .&. 0x3f)
-                        , 0x80 + oc .&. 0x3f
-                        ]
-   | otherwise        = [ 0xf0 + (oc `shiftR` 18)
-                        , 0x80 + ((oc `shiftR` 12) .&. 0x3f)
-                        , 0x80 + ((oc `shiftR` 6) .&. 0x3f)
-                        , 0x80 + oc .&. 0x3f
-                        ]
-
---
--- | Decode a UTF8 string packed into a list of Word8 values, directly to String
---
-decode :: [Word8] -> String
-decode [    ] = ""
-decode (c:cs)
-  | c < 0x80  = chr (fromEnum c) : decode cs
-  | c < 0xc0  = replacement_character : decode cs
-  | c < 0xe0  = multi1
-  | c < 0xf0  = multi_byte 2 0xf  0x800
-  | c < 0xf8  = multi_byte 3 0x7  0x10000
-  | c < 0xfc  = multi_byte 4 0x3  0x200000
-  | c < 0xfe  = multi_byte 5 0x1  0x4000000
-  | otherwise = replacement_character : decode cs
-  where
-    multi1 = case cs of
-      c1 : ds | c1 .&. 0xc0 == 0x80 ->
-        let d = ((fromEnum c .&. 0x1f) `shiftL` 6) .|.  fromEnum (c1 .&. 0x3f)
-        in if d >= 0x000080 then toEnum d : decode ds
-                            else replacement_character : decode ds
-      _ -> replacement_character : decode cs
-
-    multi_byte :: Int -> Word8 -> Int -> [Char]
-    multi_byte i mask overlong = aux i cs (fromEnum (c .&. mask))
-      where
-        aux 0 rs acc
-          | overlong <= acc && acc <= 0x10ffff &&
-            (acc < 0xd800 || 0xdfff < acc)     &&
-            (acc < 0xfffe || 0xffff < acc)      = chr acc : decode rs
-          | otherwise = replacement_character : decode rs
-
-        aux n (r:rs) acc
-          | r .&. 0xc0 == 0x80 = aux (n-1) rs
-                               $ shiftL acc 6 .|. fromEnum (r .&. 0x3f)
-
-        aux _ rs     _ = replacement_character : decode rs
-